113205040 has 160 divisors (see below), whose sum is σ = 316854720. Its totient is φ = 37158912.

The previous prime is 113205031. The next prime is 113205047. The reversal of 113205040 is 40502311.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (113205047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335752 + ... + 336088.

It is an arithmetic number, because the mean of its divisors is an integer number (1980342).

Almost surely, 2^113205040 is an apocalyptic number.

113205040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113205040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158427360).

113205040 is an abundant number, since it is smaller than the sum of its proper divisors (203649680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113205040 is a wasteful number, since it uses less digits than its factorization.

113205040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 113205040 is about 10639.7857121279. The cubic root of 113205040 is about 483.7510501705.

Adding to 113205040 its reverse (40502311), we get a palindrome (153707351).

The spelling of 113205040 in words is "one hundred thirteen million, two hundred five thousand, forty".